Maxillary Sinus Flashcards
Function of paranasal sinuses
- Resonance to voice
- Reduce weight of skull
- Reserve chamber for warm inspired air
Opening of maxillary sinus
Osteum
4mm diameter
Sinus epithelium
Pseudostratified ciliated columnar epithelium
Function of cilia
Mobilise trapped contents + foreign material and move it towards the opening
What nerve lies close to maxillary sinus
PSA
Clinical significance of proximity to sinus
- OAC
- OAF
- Root in sinus
- Sinusitis
What is an OAC?
Communication created between sinus + oral cavity
What is an OAF?
Chronic problem communication between sinus and oral cavity persists, opening becomes a fistula
Antibiotic for OAC
Pen V 500mg 5 days
Surgical closure of OAC
3 sided buccal advancement flap
Raise full thickness mucoperiosteal flap
Tx of OAF
Excision of sinus tract
Buccal advancement flap
Antral wash out
Name examples of flap options
Buccal advancement flap
Buccal fat pad
Palatal flap
Bone graft
Aetiology of maxillary tuberosity fracture
- Lone standing molar
- XLa in wrong order
(always go posterior and work forward) - Inadequate alveolar suport
When can you leave a root in sinus?
When its not tore the lining of the sinus
Root wedged between lining of sinus and alveolar Bonne
Root in sinus retrieval options
- Buccal advancement flap
- Caldwell luck approach
- ENT
Aetiology of sinusitis
Cilia struggle to empty contents of sinus due to blockage
Their movement patterns are affected by allergies/inflammation
Obstruction of sinus opening
Name the sinuses
Frontal sinus
Sphenoid sinus
Ethmoid air cells
Maxillary sinus
Signs + symptoms of Sinusitis
Facial pain
Congestion
Pressure
Nasal obstruction
Fever
Headache
Dental pain
Halitosis
Fatigue
Cough
Ear pain
Indicators of sinusitis
Discomfort on palpation of infraorbital region
Diffuse pain in maxillary teeth
Pain that worsens with head/facial movements
Tx for sinusitis
Ephedrine nasal drops 0.5% one drop each nostril up to 3x daily
Steam
Antibiotics if symptomatic tx not effective
Amoxicillin 500mg 3x day for 7 days
